Texas Instruments TI-30X IIS 2-Line Solar/Battery-Powered Scientific Calculator, Lime Green Robust, professional grade scientific calculator, fraction/decimal conversion, trig, log, exponents It has 2-line display shows entry and calculated result at same time; edit, cut, paste entries Easily handles 1 and 2 variable statistical calculations and three angle modes (degrees, radians, and grads) and scientific and engineering notation modes Solar/battery powered 1-year limited warranty